Extreme Weight Loss (2022): How Much Weight Can You Lose In A Week?

July 7, 2022 | 3727 Comments


how much weight can you lose in a week without eating

Important note: Please advise your doctor before following any plan. Don’t follow the advice below if you are under 18. 

People always ask: How much weight can you lose in a week?” Well… to answer your question I have good news, awesome news, and bad news.

First onto the good news: YOU CAN LOSE A TON OF WEIGHT IN ONE WEEK

That’s right, you don’t have to be bound to the conventional wisdom of only losing 1 or 2 pounds a week. Extreme weight loss diets can definitely work, but only for a short period of time.

In fact, you can lose up to 15 pounds in one week if you do it correctly.

Now onto the awesome news: ALL THAT WEIGHT YOU LOSE WILL BE WATER AND FAT, NOT MUSCLE

Yup, you read that correctly, if you follow the methods at the end of this post, all the weight you lose during the week will be pure body fat. The conventional statement that losing more than 2 pounds per week leads to muscle, organ, and hair loss is absolute unicorn shit.

How do I know this? Because some awesome scientists from the American College Of Nutrition back in 1999, conducted a study, which tested 2 groups of people for 12 weeks.

One group only did traditional cardio, while the other group only did weight training. Both groups ate 800 calories a day. At the end of the study, both groups lost large amounts of weight, but the one that only did cardio lost large amounts of lean muscle mass, and the one that only did weight training didn’t lose any muscle mass at all.

So there you go, some hard hitting scientific facts that prove that you will not lose muscle during extreme dieting as long as you lift weights.

Note: And if you don’t have a gym membership or if you don’t have access to any weights, then doing a well-designed bodyweight program like Bodyweight Burn is your next best option.

And lastly, the bad news: YOU HAVE TO EAT VERY VERY LOW CALORIES

So yeah…. you have to eat a ridiculously low amount of calories to lose a lot of weight in a week. I’m talking along the lines of 800 calories a day.

The amount that would make any nutritionist hang themselves.

And now, onto the plan, but first, a picture of steaks:

How much weight can you lose in a week protein
I didn’t want to put a boring picture of a scale, so here’s some delicious steaks. I’m guessing this isn’t the best article to put this picture in

The 2-step plan to lose the maximum amount of weight in a week

Please note that the following plan can be used by both men and woman.

And don’t do this plan if you’re under 18, you’re way too young to be eating such low calories.

I guarantee that if you follow the plan below, you will lose 10-15 pounds(water and fat) in one week:

1) For one week only, eat 800 calories per day.

2) Workout 2-3 times per week with weights. Make sure the weights are heavy and be sure to hit all body parts.

That’s all.

Some notes/tips about the above 2 steps:

  • 800 calories is very little food, for any man, woman, or baby walrus. Because of this, I suggest that you only eat 1 meal per day a la Brad Pilon’s Eat Stop Eat. If you eat one 800 calorie meal per day, then you’ll at least feel somewhat satisfied, but if you split that up into 3 or even worse, 6 meals per day, then you’re not going to fare so well on this one week venture. Yes, this means that you will be fasting 24 hours every day for a whole week. Just remember, you will be burning fat, not muscle.
  • Whenever possible, eat higher protein and eat foods with high water content such as fruits and soups. Also, drink lots of coffee and green tea, since they both tend to blunt hunger quite well.
  • Stick with heavy compound exercises when in the gym. That means no curling and crunching, and if you even step foot on a treadmill, my dumbass radar will go off and I may have to kill you.
  • If you can’t lift weights, then your next best option is to do some sort of bodyweight training. You know…exercises like squats, push-ups, lunges, pull-ups, sit-ups, etc..
  • This is a mental game more than anything else. When you’re eating very few calories to lose weight faster, your mind starts playing tricks on you. Your stomach is gonna be grumbling more often. And there are gonna be times where you want nothing more than to self-sabotage yourself. Which is why the next point is so important.
  • Above all, keep yourself distracted and out of the kitchen. If you’re constantly prancing around the kitchen and thinking about food, you’re going to fail. So keep yourself busy. Read a book, play some video games, take a nap, work on your tan, or shave your pubes. I don’t care. Just do something that doesn’t involve food.
  • [EDIT 10/6/2014] I should also add that your protein intake needs to be HIGH. Like really high. In fact, the majority of your calories should probably come from protein, fruits, and veggies if you want this diet to be effective. The protein will help keep you full but more importantly also help maintain muscle.

Remember, this is only for one week

I just wanted remind you all, that this sort of extreme weight loss plan is only a temporary plan.

The results don’t have to be temporary, but the plan is. Please do not try and do this weight loss plan for more than a week.

Doing so is really going to mess with your head and you’ll most likely binge back to your original weight.

After one week, transition to a more moderate weight loss plan for the long haul.

I hope you guys now know how much weight you could lose in a week if went balls to the walls.

Want even better results? Take it to the next level with Fat Loss Boost

Many people have been asking me, “Can I do this for more than 7 days?”

Uh…

Yes and no.

Technically, you could eat 800 cals per day for a sustained period of time.

But sooner or later it’s gonna backfire on you.

If you want a more sustainable rapid fat loss plan…

Then I highly recommend checking out Fat Loss Boost.

This is a more long-term approach than the strategy I outlined in this blog post.

It’s a strategic rapid fat loss diet that works in 14 day cycles.

So you go hard on the diet for 14 days, lose a crap ton of weight, take a break, and repeat.

And the results from Fat Loss Boost are even better:

“I have been able to lose 10 pounds using this program. Starting weight 186. Weight this morning was 176.”

“I lost 12 lbs for my first attempt. Started at 201.7 and ended at 189.9. I am amazed!!! Thanks to everywhere for all the support and great hacks.”

“Ok people I’m done 😀. I hit 171.8 today, my goal was to break 172 on this round which was what I weighed almost ten years ago (lowest as an adult). That’s 30.2 lbs in just under 3 months.

Pretty crazy, right?

Definitely give it a look if you want a realistic, yet challenging plan that burns fat faster than anything. you ever tried before.

Check out Fat Loss Boost

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Questions? Like steak? Let me know down below.

I respond to (almost) every comment, which is pretty crazy considering there’s been over 3000 comments. Sigh…I need a hobby. 

3727 Comments - Leave Your Thoughts

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  1. hey, I’m 14 years old. I’m 5’1 and 155 pounds. If I don’t eat for one week and only drink water and also exercise, how much will I lose?

    1. Stick to 1200-1800 calorie long term. If you try to eat nothing for a week (which you will definitely fail. Every nerve, bone, and muscle in your body will beg you to consume and your human brain is wired to listen ). If a 14 year old miraculously had the self control to last one week without eating, your body wilk think that you are starving and the second you start eating your metabolism will slow significantly, making you feel like breathing air will gain you 5 pounds. It is highly not recommended. Youll end up gaining much more weight in the span of a week than you will lose. Dont cheat and do shoet cuts. Build some self control and strength and as they say “just do it” the right way tho

  2. I’m 5’11” and 205lbs.
    I’ve been on a slightly modified regimen from your article the last 3 weeks. I just read this so I will try to adjust accordingly but the last 3 weeks I’ve been taking a high protein Korean shake/smoothie powder call misugaru which is a combination of grains and beans with no sugar. It comes up as about 54 calories per 50grams (about 4 tablespoons).
    I have been taking this twice a day on mondays, wednesdays, fridays and sundays with a 2 mile run every other day. On Tues, Thurs and Sat I eat about a 800 calorie meal for lunch and the same shake for dinner.
    I haven’t noticed insane weight loss, I did lose about 6-7 pounds total. Should I just do the shakes and weights at the gym as per article?

  3. You said we could do this for one week. So could you do this once a month and still be okay. Or would a you only do this one time?

    1. Just do it once and see if you can maintain a more realistic deficit for 6-8 weeks then decide if you even need to do it again.

    1. i like simple weight lifting routines that focus on heavy compound exercises like bench press, squat, pull ups, etc..

  4. Hello, so I am 5’4 and weight 113 but for many years used to weigh 107 till I moved to Europe and pretty much ate everything in site. My weight has gradually gone up in the past 3 years and no matter what I do its legit stuck on 112lbs. Is 800 calories high for someone of my starting weight?

    1. Of course it’s not my place to say how u should look. But at your height and weight, you’re not anywhere near overweight.

      Yes, 800 cals will help you lose weight but you won’t do 10 lbs in a week.

      1. Just saying, her bmi is currently 19.4, less than a full point in the healthy zone. She *is* approaching underweight. Coming down to 107 *will* put her in the underweight category at 5’4″.

        Miss, please don’t follow this person’s advice! You are at a healthy weight and should focus on toning and maintaining rather than becoming underweight! ♡

  5. I’m 5’6″ 300 46 bmi 42
    Currently taking, i3c, b12, dim, cod oil, DDR prime, manuka honey with green tea.

    I’m high acidic, using alkaline drops. Can’t quit carbs on my own. Need lifestyle change, looking to Kickstart weight loss efforts to drop 50-60 in 6months

  6. Hi , I’m 18 , 5ft11 and weigh 93kg , need to know what I should eating and drinking per day for this 800kg diet and how much weight can I lose , thank you

  7. hi am sarah Johnston and I want to lose weight I’m 240 and I been walking everyday and I want to know what else I can do please help

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